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    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">

    <!-- 移动端和响应式都必须加上 -->
    <!-- initial-scale 初始缩放 -->
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">

    <title>Document</title>
</head>

<body>

    响应式的实现
        1 禁止网页缩放  meta 
        2 使用媒体查询  @media screen  

    <h1>1111</h1>

</body>

</html>